JP2000206070A5

JP2000206070A5 -

Info

Publication number: JP2000206070A5
Application number: JP1999009611A
Authority: JP
Filing date: 1999-01-18
Publication date: 2005-05-19
Anticipated expiration: 2019-01-18

Description

以上述べたように、ＴＭＡやＤＭＡでは試料が大径化しやすく、それに伴って、試料温度の測定が不正確になるという問題が生じていた。
特に、熱膨張率を正確に決定しようとする際、試料の膨張量そのものは比較的高精度で求められるが、試料温度を正確に測定することが最大のネックとなっていた。
As described above, with TMA and DMA, the sample is likely to have a large diameter, and as a result, the measurement of the sample temperature becomes inaccurate.
In particular, when attempting to determine the thermal expansion coefficient accurately, but the expansion amount itself of the sample is obtained by a relatively high accuracy, to measure the sample temperature to accurately has been a maximum of the neck.

Claims

Reference materials with known temperature dependence of physical properties, heating furnaces that have samples and reference materials inside, and changes their temperatures, and changes in physical properties of samples and reference materials can be measured continuously in time A physical property measuring means and a reference physical property value-temperature converter that converts a physical property measurement value of the reference material at each time point into a temperature of the reference material at that time point, and information on continuous physical property change of the reference material is used as a temperature detection signal. A thermal analyzer that converts and outputs the sample temperature.

The thermal analysis apparatus according to claim 1, wherein the physical property value is an expansion amount or an expansion rate of the material.

The thermal analysis apparatus according to claim 1, wherein the reference physical property value-temperature converter converts the measurement result of the physical property value of the reference material into a temperature of the reference material using an elapsed time after the start of measurement as a parameter. .

Temperature dependence using known substance as reference substance is measured temporally successively in the same heating furnace or the same heating conditions on the basis of the reference material and the property value measurement results of the sample, the reference substance at each time point A thermal analysis method characterized in that the temperature of the reference material obtained from the characteristic value is set as the temperature of the sample at each time point, and is output in combination with the sample temperature and the physical property value measurement result of the sample.